Results 141 to 150 of about 858,402 (225)

André, Relationship between polar cap patches and field-aligned irregularities as observed with an all-sky airglow imager at Resolute Bay and the PolarDARN radar at Rankin Inlet

, 2020
[1] Simultaneous two-dimensional observations of airglow enhancement and radar backscatter from field-aligned irregularities (FAIs) associated with polar cap patches were conducted.
G J Sofko, Y Otsuka, D A Andre, K Shiokawa, T Ogawa, J.-P St-Maurice, K, K Hosokawa, Citation : Hosokawa   +8 more
core  

Tunable, High Pulse Energy and Narrow Linewidth Gas‐Filled Fiber Laser Across Near‐ and Mid‐Infrared

Laser &Photonics Reviews, EarlyView.
A cascaded gas‐filled anti‐resonant hollow‐core fiber architecture enables broadly tunable infrared Raman lasers spanning ∼1.4–4.6 µm while maintaining microjoule‐level pulse energies and gigahertz‐level linewidths. The approach combines a wavelength‐tunable pump laser with optimized Raman frequency conversion, providing a compact route to high ...
Yazhou Wang, Marcello Meneghetti, Manoj K. Dasa, Timothy Bate, J. E. Antonio‐Lopez, Ian A. Davidson, Qiang Fu, Jaroslaw Rzegocki, Gregory T. Jasion, Francesco Poletti, Rodrigo Amezcua‐Correa, Christos Markos   +11 more
wiley   +1 more source

The Propagation and Evolution of Polar Cap Patches During Auroral Substorm Activity

Journal of Geophysical Research: Space Physics
Abstract Polar cap patches are islands of enhanced plasma density formed during intervals of southward interplanetary magnetic field (IMF). The present study examines the observations of polar cap patches during sequential auroral substorms that occurred on 9 September 2011.
Jianjun Liu, Yaqi Jin, Xiangcai Chen, Zhiwei Wang, Fang He, Zejun Hu, Akira Sessai Yukimatu, William Bristow, Hongqiao Hu, Beichen Zhang   +9 more
openaire   +1 more source

Optical Stimulation and Monitoring of the Peripheral Nervous System: Perspectives and Challenges Toward Clinical Translation

Laser &Photonics Reviews, EarlyView.
Optical neuromodulation with IR light allows stimulation of the PNS without the need for physical contact with the target nerve or without requiring any genetic modification. The clinical translation of this technique will pave the way to the development of neural interfaces for restoring sensory feedback in individuals with limb amputation.
Federica Piccirillo, Sarassunta Ucci, Anna Aliberti, Patrizio Vaiano, Alessia La Rocca, Francesca Angelone, Silvia Pascarella, Pellegrino Lippiello, Maria Concetta Miniaci, Giuseppe Prisco, Michela Russo, Francesco Amato, Deyanira Contartese, Milena Fini, Gianluca Giavaresi, Lucia Martini, Francesco Rosa, Cosimo Gentile, Emanuele Gruppioni, Armando Ricciardi, Andrea Cusano   +20 more
wiley   +1 more source

Conditions for the Kelvin‐Helmholtz Instability in the Polar Ionosphere

Geophysical Research Letters
The Kelvin‐Helmholtz instability can be excited by a velocity shear in a fluid. Inhomogeneous flows are frequently observed in regions with polar cap patches, reversed flow events and auroral arcs, that is, regions with irregularities that disturb ...
Andreas Kvammen, Andres Spicher, Matthew Zettergren, Devin Huyghebaert, Theresa Rexer, Björn Gustavsson, Juha Vierinen   +6 more
doaj   +1 more source

Multi-Instrument Analysis of the Formation and Segmentation of Tongue of Ionization Into Two Consecutive Polar Cap Patches

This paper investigates the formation and segmentation of the tongue of ionization into two consecutive polar cap patches using multi-instrument observations from 27 February 2014.
Lyons, Larry R., Hairston, Marc R., Deng, Zhong-Xin, Oksavik, Kjellmar, Xing, Zan-Yang, Ma, Yu-Zhang, Zhang, Qiang, Zhang, Qing-He, Zhao, Si-Han, Liu, Jian-Jun, Nanan, Balan, Wang, Yong   +11 more
core   +1 more source

Respiratory‐Resolved Isotropic 3D T1 Mapping of the Carotid Vessel Wall With B1+ Correction (CARISMAT1C)

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop, optimize, and characterize a respiratory motion‐resolved free‐running isotropic 3D carotid vessel wall T1 mapping technique named CARISMAT1C. Methods An inversion‐recovery gradient‐echo free‐running pulse sequence with interleaved double flip‐angle (2FA) was implemented, and an extended‐phase‐graph dictionary was used to ...
Isabel Montón Quesada, Céline Hirsch, Pauline Calarnou, Jean‐Baptiste Ledoux, Jérôme Yerly, Christopher W. Roy, Augustin C. Ogier, Ruud B. van Heeswijk   +7 more
wiley   +1 more source

Optimizing Ex Vivo MRI and Controlling the Roll of the Specimen Using Container‐ and Brain‐Specific 3D‐Printed Holders

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Positioning and stabilizing a specimen in a container in preparation for ex vivo MRI are challenging. In addition, ex vivo MRI is often performed using preclinical scanners with gradient nonlinearity and nonhomogeneous sensitivity, requiring optimal placement.
Sethu K. Boopathy Jegathambal, Stefano Bambace, Sarah Kim, Junqi Wang, Angela Xiaomeng Zhu, Gurucharan Marthi Krishna Kumar, Ziqi Hao, Han Ru Liu, Aleksandra Bortel, Jérémie P. Fouquet, David A. Rudko, Amir Shmuel   +11 more
wiley   +1 more source

Noncatalytic Synthesis of High‐Density and Small‐Diameter WS2 Nanotubes

National Materials, EarlyView.
A noncatalytic strategy enables high‐density WO₂.₉ nanowire synthesis on engineered substrates. Subsequent sulfuration converts them into small‐diameter WS₂ nanotubes. Individual nanotube devices show superior photoresponse, highlighting a scalable route for optoelectronics.
Fengkai Zhou, Hangzhe Qi, Lingfeng Wang, Tianyu Wang, Yicheng Ma, Zheng Zhou, Chunxia Yang, Qi Zhang, Yongjia Zheng, Shigeo Maruyama, Rong Xiang   +10 more
wiley   +1 more source

Floristic condition drives differential response to cultural burns in grassy woodlands for ectomycorrhizal and arbuscular mycorrhizal fungi

PLANTS, PEOPLE, PLANET, EarlyView.
Cultural burns are a critical Indigenous land management practice with diverse cultural and biodiversity benefits, now being reintroduced by Indigenous communities to Australian grassy woodlands after long post‐colonization suppression. How these burns influence soil fungi, critical partners in plant nutrition, remains poorly understood.
Solomon Maerowitz‐McMahan, Elle J. Bowd, Dean Freeman, Rachael H. Nolan, Adam Frew, Jeff R. Powell   +5 more
wiley   +1 more source